April weather forecast
Palmar, Costa Rica

April, like March, in Palmar, Costa Rica, is another warm spring month, with temperature in the range of an average low of 19.2°C (66.6°F) and an average high of 29.7°C (85.5°F).

Temperature

Palmar experiences the peak of its temperatures in March and April, when the average high-temperatures rise to 29.7°C (85.5°F).

Heat index

In April, the heat index is estimated at a torrid 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in April in Palmar is 73%.

Rainfall

In Palmar, Costa Rica, during April, the rain falls for 20 days and regularly aggregates up to 86mm (3.39") of precipitation. In Palmar, during the entire year, the rain falls for 272 days and collects up to 2217mm (87.28") of precipitation.

Daylight

In Palmar, the average length of the day in April is 12h and 21min.
On the first day of April, sunrise is at 05:34 and sunset at 17:48. On the last day of the month, sunrise is at 05:20 and sunset at 17:49 CST.

Sunshine

The average sunshine in April in Palmar is 9.1h.

UV index

January through April, June, July, September, October and December, with an average maximum UV index of 6, are months with the highest UV index in Palmar. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In April, the maximum UV index of 6 translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.